CVE-2021-31805 Scanner

Apache Struts is an open-source web application framework that is widely used for developing Java web applications. Its primary purpose is to simplify the process of designing scalable, maintainable, and secure web applications. The framework is easy to use and fast, making it a popular choice for developers worldwide. 

CVE-2021-31805 is a vulnerability that has been detected in the Apache Struts framework. This vulnerability affects Apache Struts 2.0.0 to 2.5.29. It is an incomplete patch for the CVE-2020-17530 vulnerability which means some of the tag's attributes can perform a double evaluation if forced OGNL evaluation is applied by using the %{...} syntax. 

This vulnerability can lead to a remote code execution attack, which means an attacker can execute arbitrary code on the affected system and take complete control over it. The attacker can steal sensitive information, make changes to the system's configuration, and launch further attacks on the company's network or users. The consequences of such attacks can be catastrophic, leading to data breaches, loss of reputation, and financial damages. 

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REFERENCES

• http://www.openwall.com/lists/oss-security/2022/04/12/6
• https://cwiki.apache.org/confluence/display/WW/S2-062
• https://security.netapp.com/advisory/ntap-20220420-0001/